This is a further investigation into the events that took place in Siam during the total solar eclipse of 6 April 1875. Lockyer and Schuster mentioned in their “Report on the Total Solar Eclipse of April 6, 1875” that observations took place in Bangkok at the Grand Palace. Mom Chao Duangchit Chitraphong states in her biographical preface that her father, Prince Narisara Nuwattiwong, participated in an eclipse drawing contest organised by King Chulalongkorn before the start of totality. The Prince’s name was one of the drawers’ name given in Lockyer and Schuster’s report. The eclipse observations and the drawing contest must have occurred at the same place and at the same time.

Some of the few historic personalities mentioned in the documents were already at the height of their careers, e.g., Prince Maha Mala, while others would go on to make their marks in arts, politics, and society. All were important figures in the history of Thailand up to the mid-20^th century.

Another question is where in the Grand Palace the observation took palce. Clues are provided by a little-known mural at Wat Ratchapradit, a temple near the Grand Palace built by King Mongkut.

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